• Install safety nets or fall arrest systems before starting purlin installation.
• Wear a harness with a short lanyard when no collective fall protection is available.
• Use the approved method statement sequence for each bay of purlin installation.
• Fully tighten purlin bolts before using them as a base for further work.
• Handle purlins with care in windy conditions; they catch wind easily at height.
• Use a crane or mechanical aid to lift purlin bundles to the working level.
• Maintain three points of contact when moving on the steel frame between positions.
• Establish exclusion zones below the purlin installation area at all times.
• Brief the team on the fall protection plan and anchor points before starting.
• Stop work in high winds that make purlin handling unsafe at height.

• DON'T walk along purlin top flanges as a means of access on the frame.
• DON'T install purlins without fall protection such as nets, harnesses, or guardrails.
• DON'T leave purlin bolts loose or finger-tight during the installation sequence.
• DON'T handle purlins in high winds that could throw you off balance.
• DON'T stack purlins on the steel frame without securing them against sliding.
• DON'T work at the leading edge without a harness attached to an approved anchor.
• DON'T throw bolts or tools between operatives working on the steel frame.
• DON'T remove safety nets or edge protection before all purlins in the bay are fixed.
• DON'T stand under purlin bundles being lifted by crane to the working level.
• DON'T deviate from the method statement installation sequence without approval.

See also: Steel Erection Safety | Working on Steel at Height